The novelty of immobilized p-dimethylaminobenzylidenerhodanine is successfully prepared by using TiO2-based nanoparticles as the carrier. It is applied to preconcentrate and separate trace thallium and detect by flow injection combined with graphite furnace atomic absorption spectrometer. The results show that immobilized p-dimethylaminobenzylidenerhodanine can preconcentrate and separate trace thallium and eliminate the interference of many other ions. The optimal adsorption occurs at pH = 3.5, the retention time is 2.0 min, and the flow veloc...
